How can I have presets for multiple render options?
I just checked, and when I create a new scene and 'link objects' then I can switch between scenes and the position of my object is the same in both if I move it on one or the other. If I use 'Link Object Data' then the objects are there but they are only moved in the scene where I made the movement, and in original position in the other.Maybe choosing 'Link Objects' can let you share the objects and then make the settings locally for render different then.

An addon or script is not that hard to make yourself if you look at simple examples for making your own operator that acts as a macro to perform some action or change a setting. cgcookie intial python scrtipting and cgcookie setting up custom panel. These are only two examples of all kinds of stuff you can find on the internet, and depending on how you want to access your script you might even just keep it handy to call up and run when you want to from the text editor, or go so far as to make a custom addon panel for yourself.